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# 1  
Old 07-11-2017
Search for words starting and ending with
im trying to search for a WORD in a file which
begins with a number
followed by a hypen
follwed multiple words
and end with a dot "."
and pront the entire line which matches the above.

Please note that there is a space at the begining of each line

i/p file
Code:
 
 19458 00000-CONTROL-PARA.
 19453 LNK-EDCOMON-PARMS   LNK-EDCOMON-PARMS.
 19497     COPY EDPC.
 26531 50048-CHECK-IF-FS-FAIL-4-QR7.
 26862 50053-CHECK-INDV-RCV-TFS.
 26862 50053-CHECK-INDV-RCV-TFS.
 19497     COPY EDPC.

o/p should be like
Code:
 19458 00000-CONTROL-PARA.
 26531 50048-CHECK-IF-FS-FAIL-4-QR7.
 26862 50053-CHECK-INDV-RCV-TFS.
 26862 50053-CHECK-INDV-RCV-TFS.

I tried the below but doesn seems to work. and I do not know to implement multiple search patterns for a single word.

Code:
grep -w "\b[0-9]*\.$" input
grep -w "[0-9]*\.$" input

Kindly assist in getting the o/p
# 2  
Old 07-11-2017
Try
Code:
grep -E "[[:digit:]]+(-[[:alnum:]]+)+\." file
 19458 00000-CONTROL-PARA.
 26531 50048-CHECK-IF-FS-FAIL-4-QR7.
 26862 50053-CHECK-INDV-RCV-TFS.
 26862 50053-CHECK-INDV-RCV-TFS.

# 3  
Old 07-11-2017
I take it this is COBOL so the first six columns don't count and column 7 must be a space.
# 4  
Old 07-11-2017
Quote:
Originally Posted by anijan
im trying to search for a WORD in a file which
begins with a number
followed by a hypen
follwed multiple words
and end with a dot "."
and pront the entire line which matches the above.
[SNIP]
I tried the below but doesn seems to work. and I do not know to implement multiple search patterns for a single word.
Such a consistent formulation of a question deems a longer answer: you won't need multiple search patterns, you will only need one - and because you have already exactly specified what you need it is quite simple. Let us try:

Quote:
im trying to search for a WORD in a file
OK: Note that not every grep understands "-w" but since you already used it i suppose yours does:

Code:
grep -w

Quote:
begins with a number
Code:
grep -w '[0-9][0-9]*'

Quote:
followed by a hypen
Code:
grep -w '[0-9][0-9]*-'

Quote:
follwed multiple words
It is not clear what you mean by "words" here because it is definitely not the same meaning as you used above. I take it (from your example) that you mean sequences of capitalized characters, digits or hyphens, yes? If so:

Code:
grep -w '[0-9][0-9]*-[A-Z0-9-]*'

Quote:
and end with a dot "."
We need to escape the dot, because it has a special meaning to grep ("any character"):

Code:
grep -w '[0-9][0-9]*-[A-Z0-9-]*\.'

I hope this helps.

bakunin
Last edited by bakunin; 07-11-2017 at 09:50 PM..
This User Gave Thanks to bakunin For This Post:
jim mcnamara
# 5  
Old 07-11-2017
Nice approach. You might want to add a plus sign or a star to allow for multiple words. And, not sure if two or more adjacent minus signs are acceptable?
This User Gave Thanks to RudiC For This Post:
jim mcnamara
# 6  
Old 07-11-2017
Quote:
Originally Posted by RudiC
Nice approach. You might want to add a plus sign or a star to allow for multiple words. And, not sure if two or more adjacent minus signs are acceptable?
You are right, the missing asterisk was a typo, which i have corrected now. Thank you for spotting it.

You are right about adjacent hyphens maybe being not allowed, but that is a lack of information from the threads o/p. If he can better specify his needs i can construct better suited regexps. The point, though, was to show how a regexp can be constructed from a specification at all.

all the best
bakunin
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